html()-text()-innerHTML-innerText
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script src="http://js.40017.cn/touch/cn/public/jquery-1.8.3.min.js"></script>
</head>
<body>
<div id="zytest"><b>测试</b></div>
</body>
<script>
// html与text方法的区别
// console.log($("#zytest")[0].innerHTML)
// console.log($("#zytest")[0].innerText)
// console.log($("#zytest").html())
// console.log($("#zytest").text())
</script>
</html>